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CentOS 7.0 - man page for xchangekeyboarddevice (centos section 3)

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XCHANGEKEYBOARDDEVIC(3) 						  XCHANGEKEYBOARDDEVIC(3)

NAME
       XChangeKeyboardDevice - change which device is used as the X keyboard

SYNOPSIS
       #include <X11/extensions/XInput.h>

       Status XChangeKeyboardDevice( Display *display,
				     XDevice *device);

       display
	      Specifies the connection to the X server.

       device
	      Specifies the device to be used as the X keyboard.

DESCRIPTION
	   The XChangeKeyboardDevice request causes the server to use the
	   specified device as the X keyboard. The device must have been
	   previously opened by the requesting client via XOpenDevice or a
	   BadDevice error will result. The device must support input
	   class Keys, or a BadMatch error will result. If the server
	   implementation does not support using the requested device as
	   the X keyboard, a BadDevice error will result.

	   If the specified device is grabbed by another client,
	   AlreadyGrabbed is returned. If the specified device is frozen
	   by a grab on another device, GrabFrozen is returned. If the
	   request is successful, Success is returned.

	   If the request succeeds, a ChangeDeviceNotify event is sent to
	   all clients that have selected that event. A MappingNotify
	   event with request = MappingKeyboard is sent to all clients.
	   The specified device becomes the X keyboard and the old X
	   keyboard becomes accessible through the input extension
	   protocol requests.

	   XChangeKeyboardDevice can generate a BadDevice or a BadMatch
	   error.

DIAGNOSTICS
	   BadDevice
		  An invalid device was specified. The specified device
		  does not exist, has not been opened by this client via
		  XOpenInputDevice, or is already one of the core X device
		  (pointer or keyboard). This error may also occur if the
		  server implementation does not support using the
		  specified device as the X keyboard.

	   BadMatch
		  This error may occur if an XChangeKeyboardDevice request
		  was made specifying a device that has no keys.

SEE ALSO
	   XChangePointerDevice(3)

					    03/09/2013			  XCHANGEKEYBOARDDEVIC(3)
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